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Cristian Marcelo Reynoso, center, poses inside his home with his children, Milagro, 5, left, Oriana, 3, bottom, and Nahuel, 10, right, in their home in the Villa 21-24 slum in Buenos Aires, Argentina, March 14, 2013. At Villa 21-24, a slum so dangerous that most outsiders wouldn't dare go in, Jorge Mario Bergoglio often showed up unannounced to share laughs and sips of mate, the traditional Argentina herbal tea.